The McCormick 6676600A1 is a genuine OEM valve, specifically designed for a wide range of McCormick tractor models. This original part is compatible with X4 series (X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.70F, X4.80F, X4.90F, X4.100F, X4.110F, X4.120F), X5 series (X5.35, X5.45, X5.55, X5.085, X5.095, X5.105, X5.115, X5.120), X6 series (X6.420, X6.430, X6.440, X6.460), X7 series (X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680), and X8 series (X8.660, X8.670, X8.680, X8.690) tractors. Utilizing this authentic McCormick valve ensures proper function, durability, and seamless integration with your agricultural machinery.